源发送批事件的速度快于订户可以接受的速度。如果没有为订阅指定确认，且在客户端消化完这些事件之前又有新事件从源到达时，可能会发生这种问题。

Message in Chinese (Simplified) (中文(简体))

Unlocalized message

The source is sending event batches faster than the subscriber can consume. This can happen if acknowledgments are not specified for the subscription and new events are arriving from the source before the client has consumed them.

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